Nucleation and Impact Modification of Polypropylene Laser Sintered Parts
| Autor: | Konrad Wegener, Manfred Schmid, Rob G. Kleijnen |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Materials science
Nucleation law.invention chemistry.chemical_compound law Thermal LASER APPLICATIONS (LASER ENGINEERING) SINTERING (POWDER METALLURGY) Composite material Engineering & allied operations LASERANWENDUNGEN (LASERTECHNIK) POLYPROPEN (KUNSTSTOFFE) POLYPROPYLENE (PLASTICS) SINTERN (PULVERMETALLURGIE) Polypropylene chemistry.chemical_classification Manufacturing technology Polymer Laser Selective laser sintering chemistry Extrusion ddc:620 |
| DOI: | 10.3929/ethz-a-010568083 |
| Popis: | Selective laser sintering (SLS) is a manufacturing technology whereby parts are built through layerwise application and selective consolidation of a polymer powder by a laser. With this additive manufacturing technology, polymer parts can be built with nearly no limits to complexity and nearly without geometrical constraints. Recently, a handful of polypropylene (PP) materials has been added to the rather limited portfolio of laser sintering powders. In conventional extrusion, the use of nucleating agents to increase clarity and impact resistance of PP is widespread. The current investigation focusses on the use of a nucleating agent in the SLS process to improve the mechanical properties of PP parts. Using a nucleating agent is not without challenges. It must be assured that addition of the agent does not change the thermal properties of the polymer in such a way, that the requirements of the SLS process cannot be met. On the other hand, it must be assured that the nucleating agent becomes effective, eve... |
| Databáze: | OpenAIRE |
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